What is the correct stringtemplate Group Syntax to build a group from a String?

Question

I am trying to build a STGroup from a String but it is complaining about invalid characters and missing templates:

    final String templates = "a(x) ::= <li>$x.fname$ $x.lname$</li>\n" +
                             "b(persons) ::= <ul>$persons:a()$</ul>\n";
    final STGroup grp = new STGroupString("mysource", templates, '$', '$');

Here is the erros that it spews out:

mysource 1:10: invalid character '<'
mysource 1:10: missing template at 'li'
mysource 1:12: invalid character '>'
mysource 1:13: invalid character '$'
mysource 1:10: garbled template definition starting at 'li'
mysource 1:14: garbled template definition starting at 'x'
mysource 1:21: invalid character '$'
mysource 1:23: invalid character '$'
mysource 1:16: garbled template definition starting at 'fname'
mysource 1:24: garbled template definition starting at 'x'
mysource 1:31: invalid character '$'
mysource 1:33: invalid character '<'
mysource 1:34: invalid character '/'
mysource 1:26: garbled template definition starting at 'lname'
mysource 1:36: invalid character '>'
mysource 1:34: garbled template definition starting at 'li'
mysource 2:16: invalid character '<'
mysource 2:16: missing template at 'ul'
mysource 2:18: invalid character '>'
mysource 2:19: invalid character '$'
mysource 2:16: garbled template definition starting at 'ul'
mysource 2:20: garbled template definition starting at 'persons'
mysource 2:31: invalid character '$'
mysource 2:33: invalid character '<'
mysource 2:34: invalid character '/'
mysource 2:36: invalid character '>'
mysource 2:34: missing '::=' at 'ul'
mysource 2:34: missing template at 'ul'
mysource 2:28: redefinition of template a
mysource 2:34: garbled template definition starting at 'ul'

I want to use the $ as my delimiters, what is the correct format to be able to render these templates?

score 0 · Answer 1 · 2013-02-08T11:58:40.857

I figured out one procedural solution with the answers to some related questions and some experimentation:

    STGroup grp = new STGroup('$', '$');
    final CompiledST templateA = grp.defineTemplate("a", "<li>$it.fname$ $it.lname$</li>");
    templateA.addArg(new FormalArgument("it"));
    final CompiledST templateB = grp.defineTemplate("b", "<ul>$list:a()$</ul>");
    templateB.addArg(new FormalArgument("list"));

What is the correct stringtemplate Group Syntax to build a group from a String?

1 Answers1